Siemens SITRANS P Betriebsanleitung Seite 178

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Differential pressure and flow rate input
HART PROFIBUS PA or Foundation Fieldbus
for process
temperature
of -20°C
< ϑ ≤ 60°C (-4°F < ϑ
≤ +140°F)
-100% of max. measuring range
(-33 % for 30 bar (435 psi) measuring cell) or 30 mbar a (0.44 psi a)
for process
temperature
60°C < ϑ
≤ 100°C (max. 85°C
for measuring cell
30 bar) (140°F < ϑ
≤ 212°F (max. 185°F
for measuring cell
435 psi))
-100% of max. measuring range (-33% for 30 bar (435 psi) measuring cell)
30 mbar a + 20 mbar a • (ϑ - 60 °C)/°C
(0.44 psi a + 0.29 psi a • (ϑ - 108 °F)/°F)
Upper measuring limit 100% of max. span (max. 120 bar g
(1740 psi g) for oxygen measurement)
100% of max. measuring range (max. 120 bar g
(1740 psi g) for oxygen measurement)
Start of scale value between the measuring limits (continuously adjustable)
Level input
HART PROFIBUS PA or Foundation Fieldbus
Measured variable Level
Measuring span
(continuously adjustable)
or measuring range and
max permissible
operating pressure (as
per 97/23/EC pressure
device guideline)
Span Maximum operating
pressure MAWP (PS)
Measuring range Maximum permissible
operating pressure
25 … 250 mbar
(10 ... 100 inH
2
O)
see the mounting
flange
250 mbar
(100 inH
2
O)
see the mounting flange
25 … 600 mbar
(10 … 240 inH
2
O)
600 mbar
(240 inH
2
O)
53 … 1600 mbar
(21 … 640 inH
2
O)
1600 mbar
(640 inH
2
O)
160 … 5000 mbar
(2.32 … 72.5 psi)
5 bar
(72.5 psi)
Lower measuring limit
Measuring cell with
silicon oil filling
-100% of the max. measuring range or 30 mbar a (0.44 psi a) depending on the mounting flange
Measuring cell with
inert liquid
-100% of the max. measuring range or 30 mbar a (0.44 psi a) depending on the mounting flange
Upper measuring limit 100% of maximum span 100 % of max. measuring range
Start of scale value between the measuring limits continuously adjustable
Technical data
11.2 Input point
SITRANS P, DS III series with HART
176 Operating Instructions, 09/2012, A5E00047092-08
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